Oliver Scott Sykes (born November 20, 1986), also commonly known as Oli Sykes, is an English Singer-Songwriter best known for being the lead vocalist of the British metalcore band Bring Me The Horizon.

Oliver Sykes was born November 20, 1986. He moved to Australia with his parents Ian and Carol Sykes when he was young, moving between Adelaide and Perth over the course of about five years. He then moved back to the UK at the age of about eight to Stocksbridge in Sheffield, South Yorkshire. As a teenager, he attended Stocksbridge High School, the same school where Arctic Monkeys band members Alex Turner, Andy Nicholson, Matt Helders and Nick O'Malley attended. He was a year below Turner and Helders.

Sykes has stated that he enjoyed the subjects English and Art while at high school, but was not interested in science or mathematics whatsoever. While at school in 2003 he began crafting together compilation CDs and short tracks under the name Quakebeat. He also played in other bands including mock hip-hop band "Womb 2 Da Tomb" with fellow Bring Me the Horizon member Matt Nicholls and brother Tom Sykes, and metal band "Purple Curto" as drummer/vocalist with schoolfriend Neil Whiteley, under the pseudonym "Olisaurus", which he would later use for releasing solo material.

Oliver refers (on the 'Bring Me The Horizon documentary, by BBC Radio 1), that his first onstage experience was when he was just a fan watching his favourite band Funeral for a Friend, at a show in Leeds, in which he got invited to sing a whole song on stage, stating that he cried at the end and confirming that was the best day of his life.

On February 1, 2013 Sykes launched a Kickstarter project to fund a graphic novel created by him and Drop Dead Clothing artist Ben Ashton-Bell, entitled Raised By Raptors. The concept arose from a shirt design made by Ashton-Bell of a Mesoamerican girl wearing a dinosaur skull on her head, which inspired Sykes to further develop the story. With a £15,000 goal, the project exceeded its target within weeks of launching- with a final sum of £39,223.